Fermi unidentified sources

The Fermi LAT collaboration has released a new skymap with more than 3 months of statistics. In the press release from NASA they point out a couple of unidentified sources as some of the most interesting ones in their point source catalog. One of them, 0FGL J1813.5-1248, is said not be have been seen by previous missions but after a quick search in Simbad, an existent gamma source is really close to the coordinates, take a look here